ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,448, issued on Feb. 3, was assigned to Acushnet Co. (Fairhaven, Mass.).

"Heptagonal dipyramid dimple pattern for a golf ball" was invented by Michael R. Madson (Easton, Mass.), Nicholas M. Nardacci (Bristol, R.I.) and Chris Hixenbaugh (North Dartmouth, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A golf ball has a generally spherical surface and a plurality of dimples formed on the surface. The dimples are arranged in a dimple pattern defined by a heptagonal dipyramid projected on the surface. The pattern includes fourteen substantially identical dimple sections including seven dimple sections in a first hemisphere and seven dimple sections i...